Results 1 to 10 of about 3,612 (210)

Sexual Polyploidization in Medicago sativa L.: Impact on the Phenotype, Gene Transcription, and Genome Methylation [PDF]

G3: Genes, Genomes, Genetics, 2016
Polyploidization as the consequence of 2n gamete formation is a prominent mechanism in plant evolution. Studying its effects on the genome, and on genome expression, has both basic and applied interest.
Daniele Rosellini, Nicoletta Ferradini, Stefano Allegrucci, Stefano Capomaccio, Elisa Debora Zago, Paola Leonetti, Bachir Balech, Riccardo Aversano, Domenico Carputo, Lara Reale, Fabio Veronesi   +10 more
doaj   +6 more sources

Effects of polyploidization and their evolutionary implications are revealed by heritable polyploidy in the haplodiploid wasp Nasonia vitripennis. [PDF]

PLoS ONE, 2023
Recurrent polyploidization occurred in the evolutionary history of most Eukaryota. However, how neopolyploid detriment (sterility, gigantism, gene dosage imbalances) has been overcome and even been bridged to evolutionary advantage (gene network ...
Kelley Leung, Louis van de Zande, Leo W Beukeboom   +2 more
doaj   +2 more sources

Cell type specific polyploidization in the royal fat body of termite queens [PDF]

Zoological Letters, 2023
Tissue-specific endopolyploidy is widespread among plants and animals and its role in organ development and function has long been investigated. In insects, the fat body cells of sexually mature females produce substantial amounts of egg yolk precursor ...
Tomonari Nozaki, Eisuke Tasaki, Kenji Matsuura   +2 more
doaj   +2 more sources

RNA-seq analyses on gametogenic tissues of alfalfa (Medicago sativa) revealed plant reproduction- and ploidy-related genes [PDF]

BMC Plant Biology
Background In alfalfa (Medicago sativa), the coexistence of interfertile subspecies (i.e. sativa, falcata and coerulea) characterized by different ploidy levels (diploidy and tetraploidy) and the occurrence of meiotic mutants capable of producing ...
Fabio Palumbo, Giovanni Gabelli, Elisa Pasquali, Alessandro Vannozzi, Silvia Farinati, Samela Draga, Samathmika Ravi, Maria Cristina Della Lucia, Giovanni Bertoldo, Gianni Barcaccia   +9 more
doaj   +2 more sources

Polyploidization-driven transcriptomic dynamics in Medicago sativa neotetraploids: mRNA, smRNA and allele-specific gene expression [PDF]

BMC Plant Biology
Whole genome duplication (WGD) is a powerful evolutionary mechanism in plants. Autopolyploids have been comparatively less studied than allopolyploids, with sexual autopolyploidization receiving even less attention.
D. F. Santoro, G. Marconi, S. Capomaccio, M. Bocchini, A. W. Anderson, A. Finotti, M. Confalonieri, E. Albertini, D. Rosellini   +8 more
doaj   +2 more sources

Earthworm (Oligochaeta, Lumbricidae) intraspecific genetic variation and polyploidy [PDF]

Вавиловский журнал генетики и селекции
Earthworms are known for their intricate systematics and a diverse range of reproduction modes, including outcrossing, self-fertilization, parthenogenesis, and some other modes, which can occasionally coexist in a single species.
S. V. Shekhovtsov, Ye. A. Derzhinsky, E. V. Golovanova   +2 more
doaj   +2 more sources

EVOLUTIONARY DYNAMICS OF AUTOPOLYPLOIDS IN NATURAL POPULATIONS: THE CASE OF TURNERA SIDOIDES COMPLEX [PDF]

BAG. Journal of Basic and Applied Genetics, 2022
Turnera sidoides (x=7) is one of the few well-studied South American autopolyploid complexes. Since polyploidy has played a prominent role within this complex, ongoing studies in T.
Kovalsky I.E., Elías G., Fernández S.A., Moreno E.M.S., Silva G.C., Roggero Luque J.M., Almirón N.E.A., Solís C., Dabrio A., Via Do Pico G.M., Seijo J.G., Solís Neffa V.G.   +11 more
doaj   +1 more source

A Review of Unreduced Gametes and Neopolyploids in Alfalfa: How to Fill the Gap between Well-Established Meiotic Mutants and Next-Generation Genomic Resources

Plants, 2021
The gene flow mediated by unreduced gametes between diploid and tetraploid plants of the Medicagosativa-coerulea-falcata complex is pivotal for alfalfa breeding.
Fabio Palumbo, Elisa Pasquali, Emidio Albertini, Gianni Barcaccia   +3 more
doaj   +1 more source

Exploiting Unreduced Gametes for Improving Ornamental Plants

Frontiers in Plant Science, 2022
The formation of gametes with somatic chromosome number or unreduced gametes (2n gametes) is an important process involved in the origin of polyploid plants in nature. Unreduced gametes are the result of meiotic mutations occurring during micro- and mega-
Li Xie, Li-zhen Ke, Xiao-qi Lu, Jianjun Chen, Zhi-sheng Zhang   +4 more
doaj   +1 more source

Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis.

PLoS Genetics, 2022
Polyploidization may precipitate dramatic changes to the genome, including chromosome rearrangements, gene loss, and changes in gene expression. In dioecious plants, the sex-determining mechanism may also be disrupted by polyploidization, with the ...
Melissa A Toups, Beatriz Vicoso, John R Pannell   +2 more
doaj   +1 more source